<template>
   <el-container class="main_container">
       <!--头部布局-->
  <el-header>
<div class="left_box">
<img src="../assets/img/timg.gif">
<span>新冠物资管理系统</span>
</div>
<div class="right_box">
<el-dropdown>
<img src="../assets/img/timg.gif">
 <!--下拉菜单-->
  <el-dropdown-menu slot="dropdown">
    <el-dropdown-item icon="el-icon-house">系统首页</el-dropdown-item>
    <el-dropdown-item icon="el-icon-ship">交流讨论</el-dropdown-item>
    <el-dropdown-item icon="el-icon-switch-button">退出登录</el-dropdown-item>
  </el-dropdown-menu>
</el-dropdown>

</div>
  </el-header>
  <el-container>
    <el-aside :width="isCollapse?'60px':'200px'">
        <div class="toggle_box" @click="toggleCollapse">|||</div>
 <el-menu
      default-active="2"
      class="el-menu-vertical-demo"
      @open="handleOpen"
      @close="handleClose"
      background-color="#001529"
      text-color="#fff"
      active-text-color="#ffd04b" :collapse =isCollapse :collapse-transition="false" :unique-opened="true">
      <MenuTree></MenuTree>
      
    </el-menu>
    </el-aside>
    <el-main>Main</el-main>
  </el-container>
</el-container>

</template>

<script>

import MenuTree from '../components/MenuTree'
export default {
    name:'Main',
    data(){
      return {
          isCollapse:false
      }

    },
    components:{
        MenuTree
    },
    methods:{
    toggleCollapse(){
        this.isCollapse=!this.isCollapse
    }

    }

}
</script>
<style lang="less" scoped>

.main_container{
    height: 100%;
}

  .el-header {
    background-color: #001529;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    color: #FFFFFF;
    align-items: center;
    font-size: 20px;

    .left_box{
     display: flex;
     align-items: center;

     img{
     width: 60px;
     height: 60px;
     margin: 0px,0px,10px,15px;
     }
     span{
      margin-left: 15px;
     }
    }
.right_box{

.el-dropdown>img{
  width: 60px;
  height: 60px;
  border-radius: 50%;  
  background-color: #FFFFFF;
  margin: 0px 15px 0px 0px;
  background-size: contain;
}

}
  } 
  
  .el-aside {
    background-color: #001529;

    .el-menu{
        border-right: none;
    }
    .toggle_box{
    background-color: chartreuse;
    font-size: 15px;
    font-weight: bold;
    line-height: 25px;
    color: #FFFFFF;
    letter-spacing: 0.2em;
    text-align: center;
    cursor: pointer;

    }
  }
  
  .el-main {
    background-color: #E9EEF3;
    color: #333;
    text-align: center;
    line-height: 160px;
  }
  
  
  
   .el-dropdown-link {
    cursor: pointer;
    color: #409EFF;
  }
  
</style>